Apache Tomcat AJP Send Headers Info Leak (v9.0.74, 8.5.88, 10.1.8, 11.0.0-M5)
CVE-2023-34981 Published on June 21, 2023
Apache Tomcat: AJP response header mix-up
A regression in the fix for bug 66512 in Apache Tomcat 11.0.0-M5, 10.1.8, 9.0.74 and 8.5.88 meant that, if a response did not include any HTTP headers no AJP SEND_HEADERS messare woudl be sent for the response which in turn meant that at least one AJP proxy (mod_proxy_ajp) would use the response headers from the previous request leading to an information leak.
Vulnerability Analysis
CVE-2023-34981 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality, with no impact on integrity and availability.
Weakness Type
Incorrect Permission Assignment for Critical Resource
The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors. When a resource is given a permissions setting that provides access to a wider range of actors than required, it could lead to the exposure of sensitive information, or the modification of that resource by unintended parties. This is especially dangerous when the resource is related to program configuration, execution or sensitive user data.
Products Associated with CVE-2023-34981
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Affected Versions
Apache Software Foundation Apache Tomcat:- Version 11.0.0-M5 is affected.
- Version 10.1.8 is affected.
- Version 9.0.74 is affected.
- Version 8.5.88 is affected.
- Version 10.1.8 is affected.
- Version 11.0.0 is affected.
- Version 8.5.88 is affected.
- Version 9.0.74 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.